Copying-press



Patented 001:. I8, I898.

No. 6l2,392.

G. F. BALLDU.

COPYING PRESS.

(Application filed Dec. 112 1897.)

(No Model.)

1 1 22 eaaes: In veiziar NITED STATES PATENT OFFICE.

GEORGE E. BALLOU, OF NEWARK, JERSEY, ASSIGNOR TO ALBERT B. DICK, OFCHICAGO, ILLINOIS.

COPYING-PRESS.

SPECIFICATION forming part Of Letters Patent No. 612,392, dated October18, 1898.

Application filed December 11, 1897. Serial No. 661,530. (No model.)

T0 at whom it may concern:

Be it known that I, GEORGE F. BALLOU, a citizen of the United States,residing at Newark, in the county of Essex and State of New Jersey, haveinvented a certain new and useful Improvement in Copying-Presses,ofwhich the following is a specification.

The object of my invention is to produce a copying-press employing twoplates, between which the book or other object is compressed and whichare capable of two distinct rates of relative movement,the plates beingcaused to approach each other at a relatively fast rate of movementuntil the object to be compressed is firmly engaged between said plates,and the plates being subsequently approached toward each other tocompress said object by a relatively slow rate of movement, whereby avery much greater compressive effect may be produced upon said objectwith the same expenditure of energy, or the same compressive effect maybe exerted upon said object with a very much smaller expenditure ofenergy than is possible in those presses wherein the plates are causedto approach each other always at the same rate of relative movement. I

In order that my present invention may be understood, attention isdirected to the accompanying drawings, forming a part of thisspecification, in which Figure 1 is a side elevation, partly in section,of a copying-press embodying my in vention; and Fig. 2, a sectional viewof the same.

In both of the above views corresponding parts are represented by thesame letters of reference.

being connected by a web I), so as to be very rigidly sustained. Thestandards B B are each provided with a corresponding toothed rack c, andbetween each adjacent toothed rack a. and c is placed a pinion 61. Thesepinions not only serve to guide the upper plate D in its correctvertical travel, but they also are employed for the purpose of giving tothe plate D a powerful final compression, as will be explained Thepinions d dare provided at each side with toothed disks 6, the teeth ofwhich are made very fine, so as to overcome lost motion in the device.Each pinion is further provided with a short stub-shaft f, extendingthrough the same, and mounted upon this shaft at each side is a lever g,connected at its rear end to a block E. Each lever 9 is preferablyinade'of spring metal and is connected to said block E bya screw h. Inorder to allow for proper movement, each screwh works in a slot in itscorresponding lever. The outer end of each lever g carries an integraltoothed ring 2', which is adapted to cooperate with the toothed disk eof each pinion d to constitute a clutch. The block E is provided withoutwardly-extending arms j, each of which is provided with anupwardlyextending cam portion is, which is adapted to engage with theadjacent spring-lever g to force the same outward to the position shownin dotted lines, Fig. 2, and to thereby disengage the toothed ring t'from the disk e. The ordinary screw-shaft F of the press enters theblock E at its lower end and is prevented from moving relatively to saidblock by a pin Z working in a groove m in said screw-shaft. If desired,however, the lower end of the screw-shaft may extend entirely throughthe block E and be provided at its lower end with a nut and above saidblock with a collar, by which said block will be positively actuated bysaid screw-shaft.

The operation of the improved copyingpress which I have described is asfollows: Normally the weight of the upper plate D tends to rotate thepinions d d, so as to roll said pinions downward with respect to theracks c. This carries the spring-levers g into engagement with thecam-surfaces hand said levers at their outer ends are moved outward, soas to disengage the toothed rings from the disks 6. The cam-surfaces 7twill therefore act as limiting-stops for further downward movement ofthe spring-levers and will therefore sustain the upper plate D in itsnormal position. Upon rotating the screw-shaft F the block E will belowered, allowing the pinions 01 to roll downward with respect to theracks c, and hence actuating the racks a, so as to move the upper platewith an increased rate of movement toward the book or other object to becompressed. In other words, the said upper plate D will move toward thebook or other object at twice the velocity of the block E, and hence attwice the feeding-speed of the screw-shaft F. As soon as the upper plateD comes into contact with the book or other object further movementdownward of the pinions d is prevented. The screw-shaft in rotating,however, carries the block E with it and disengages the cam-surfacesfrom the spring-levers g, allowing the toothed rings t'to engage thedisks 6 of the pinions d. When this engagement is efiected, furthermovement of the block E downward by reason of the continued rotation ofthe screw-shaft F swings the spring-levers g on the shafts f and impartsa partial rotary movement to the pinions (1, so as to force the upperplate D into contact with the book or other object with a very muchincreased leverage. Upon the return movement of the shaft F the block Eis first elevated, bringing the cam-surfaces k into contact with thespring-levers g and disengaging the toothed rings 2' from the disks 6,so that the pinions 01 will be free to rotate in the opposite direction.The continued movement in the reverse direction of the screw-shaft Fwill therefore elevate the upper plate D through the instrumentality ofthe spring-levers g and the pinions d d.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is as follows: 4

1. In a copying-press, the combination of a stationary plate, twostandards connected to said plate, a toothed rack on each of saidstandards, a movable upper plate, toothed racks on said upper plateadjacent to the toothed racks on the standards, pinions working betweenthe adjacent toothed racks of the upper plate and standards, leversconnected to said pinions, means for disconnecting said levers from saidpinions, and a screwshaft connected with said levers, substantially asset forth.

2. In a copying-press, the combination of the stationary plate A, thestandards B having the toothed racks c c, the movable upper plate Dhaving the toothed racks a a thereon, the pinions d working between saidracks a and c, the levers g adapted to be connected to said pinions,means for positively connecting said levers with said pinions,wherebythe latter may be rotated, a block E to which all of said lovers areconnected, and a screwshaft for actuating said block, substantially asset forth.

3. In a copying-press, the combination of the stationary plate A, thestandards B B having the racks c thereon, the movable upper plate Dhaving the racks a thereon, the pinions d between said racks a and c,the levers g, the clutches e t between said levers and pinions, theblock E to which said levers are connected, means for connecting anddisconnecting said clutches, and the screw-shaft F for actuating saidblock, substantially as set forth.

4:. In a copying-press, the combination of the stationary plate A, thestandards B B having the racks c thereon, the movable upper plate Dhaving 'the racks a thereon, the pinions d between said racks a and c,the levers g, the clutches e 2' between said levers and pinions, theblock E to which said levers are connected, cam-surfaces on said blockfor connecting and disconnecting said clutches, and the screw-shaft Ffor aotuatin g said block, substantially as set forth.

This specification signed and witnessed this 7th day of December, 1897.

GEO. F. BALLOU.

